diff --git a/.config/aliasrc b/.config/aliasrc
index 468483a..39ac509 100644
--- a/.config/aliasrc
+++ b/.config/aliasrc
@@ -1,7 +1,7 @@
 #!/bin/sh
 
 # Use neovim for vim if present.
-command -v nvim >/dev/null && alias vim="nvim" vimdiff="nvim -d"
+[ -x "$(command -v nvim)" ] && alias vim="nvim" vimdiff="nvim -d"
 
 # Verbosity and settings that you pretty much just always are going to want.
 alias \
diff --git a/.config/tmux/tmux.conf b/.config/tmux/tmux.conf
index 6d85cc7..d7e74f7 100644
--- a/.config/tmux/tmux.conf
+++ b/.config/tmux/tmux.conf
@@ -12,6 +12,7 @@ setw -g automatic-rename
 set -g mouse on
 set -g history-limit 30000
 set -g terminal-overrides 'xterm*:smcup@:rmcup@'
+set -sg escape-time 20 # faster escape delay time
 set-option -g status-justify right
 set-option -g status-bg black # colour213 # pink
 set-option -g status-fg cyan